Success!
Incoming values are available in session.context.initialValueIn.ValueIn. As usual, I created my custom context menu item on the field I wanted (Customer.CustID in this case) and then in my InitTransView event that fires on form load, I’m simply setting TransView.OrderCustomerNum column to the ValueIn. Afterwards, I also have a condition to check if TransView.OrderCustomerNum has a value and am firing my data loading events if necessary.
